TOUCH DISPLAY DEVICE AND DRIVING METHOD THEREOF

摘要

A touch display device is provided. The touch display device includes: a plurality of pixel electrodes configured to receive image data to be displayed; a plurality of common electrodes; a plurality of touch sensitive electrodes; common voltage generator configured to generate a first common voltage and a second common voltage, and a selection circuit, coupled between the common voltage generator and the plurality of common electrodes. The first common voltage is a first direct voltage, and the second common voltage is an alternating voltage switched between a second direct voltage and a third direct voltage. The selection circuit is configured to selectively output the first common voltage to the common electrodes during a first time period and selectively output the second common voltage to the common electrodes during a second time period.

主权项

1. A touch display device comprising:
a plurality of pixel electrodes configured to receive image data to be displayed; a plurality of common electrodes; a plurality of touch sensitive electrodes; common voltage generator configured to generate a first common voltage and a second common voltage, wherein the first common voltage is a first direct voltage, and the second common voltage is an alternating voltage switched between a second direct voltage and a third direct voltage; and a selection circuit coupled between the common voltage generator and the plurality of common electrodes and configured to selectively output the first common voltage to the common electrodes during a first time period and selectively output the second common voltage to the common electrodes during a second time period; wherein during the first time period, the common electrodes cooperate with the pixel electrodes to display the image data on the touch display device, and during the second time period, the common electrodes cooperate with the touch sensitive electrodes to detect touch operations applied on the touch display device.